読めないと分かりませんよ。
On Sun, May 31, 2020, 02:23 ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > On 2020-05-30 04:19, Peter Pentchev wrote: > > On Fri, May 29, 2020 at 04:36:41PM -0700, ToddAndMargo via perl6-users > wrote: > > >> Hi Peter, > >> > >> No doubt it is operating as designed. > >> > >> It would be a lot more friendly if "Str:U" was > >> changed to "Str:D". Oh please! Oh Please! > > > > Sorry, I don't really understand what you mean. "Str:U" means > > an undefined string - that's what you're calling .starts-with() on. > > "Str:D" means a defined string - that's what .starts-with() wants to > > operate on. What do you mean "change Str:U to Str:D" - the error > > message says "you invoked it on an undefined string, it wants to be > > invoked on a defined string", what do you want to change? > > > > Now, if you meant "change Str:U to 'an undefined string'", mmmm, what > > I was trying to explain is that the error message is generic, it covers > > any wrong calls of functions on any types... it does not really try to > > get into what the types are (it cannot, in the general case for any > > other type). > > > > G'luck, > > Peter > > > > > Hi Peter, > > What a second. > > https://docs.raku.org/routine/starts-with > multi method starts-with(Str:D: Str(Cool) $needle, :i(:$ignorecase), > :m(:$ignoremark) --> Bool:D) > > https://docs.raku.org/routine/contains > method contains(Cool:D: |c) > > I had incorrectly presumed that since neither of > these two complained about `Str:D` not being defined > that it was specified as `Str:U` > > So my beef is when you feed these guys an undefined > variable, that they needs to tell you it requires > a "defined" variable. Not a bunch of useless rubbish. > For example (useless rubbish): > > Cannot resolve caller starts-with(Str:U: Str:D); > none of these signatures match > > (Cool:D: Cool:D $needle, :i(:$ignorecase)!, > :m(:$ignoremark), *%_ --> Bool) > (Cool:D: Cool:D $needle, :m(:$ignoremark)!, *%_ > --> Bool) > (Cool:D: Cool:D $needle, *%_ --> Bool) > (Str:D: Str:D $needle, :i(:$ignorecase)!, > :m(:$ignoremark), *%_ --> Bool) > (Str:D: Str:D $needle, :m(:$ignoremark)!, *%_ --> Bool) > (Str:D: Str:D $needle, *%_ --> Bool) > in block <unit> ... > > And I know, I don't get a vote on the matter. > -T >
